Gwen Stefani and Blake Shelton recently enjoyed an oyster date in Los Angeles.

One night after The Voice couple attended the Radio Disney Music Awards, Stefani and Shelton were spotted in a private room at Malibu's Mastro's Ocean Club.

"They were very affectionate and sweet," an eyewitness told Us Weekly on Monday, revealing the couple seemed "legit happy" together. "There was so much laughing."

According to the report, Stefani and Shelton were seen cuddling throughout their date, and at one point, Stefani was heard saying, "Oysters are awesome because they have no calories."

Stefani and Shelton began dating at the end of last year, and while they waited until November to go public with their romance, they appear to have been moving at a rapid pace ever since. In fact, as rumors of a possible pregnancy swirl, a source claims Shelton is ready to propose.

"Blake could propose to Gwen very soon," a source close to Shelton revealed to Us Weekly in April. "Gwen is everything he wants. With Gwen, Blake has the family life he'd hoped to have with Miranda. Her kids love him as much as she does."

With her former husband, Gavin Rossdale, Stefani has three children, Kingston, 9, Zuma, 7, and Apollo, 2, and while Shelton was previously married, as well, he has no children of his own -- at least not yet. 

"Blake wants kids of his own," the magazine's source said. "And Gwen is willing to try!"

At this point in their relationship, Stefani and Shelton are likely too busy to seriously consider starting a family. As Stefani prepares to embark on her upcoming tour as she promotes her new album, This Is What The Truth Feels Like, Shelton is preparing for the release of his own new album, If I'm Honest, which hits stores later this month.

While the couple is extremely busy with their careers, the source claimed they are keeping in touch via text message.

"Gwen texts Blake a million times a day," a second insider said. "But he doesn't mind at all. Blake hasn't been this happy in years!"

Tags: Gwen Stefani Blake Shelton